docs: def _get_style_of_faulting_term(self, C, rup):
          """
          Get fault type dummy variables
          Fault type (Strike-slip, Normal, Thrust/reverse) is
          derived from rake angle.
          Rakes angles within 30 of horizontal are strike-slip,
          angles from 30 to 150 are reverse, and angles from
          -30 to -150 are normal.
          Note that the 'Unspecified' case is not considered here as
          rake is always given.
          """
          if np.abs(rup.rake) <= 30.0 or (180.0 - np.abs(rup.rake)) <= 30.0:
              # strike-slip
              return C["e1"]
          elif rup.rake > 30.0 and rup.rake < 150.0:
              # reverse
              return C["e3"]
          else:
              # normal
              return C["e2"]